Check Engine Light Gas Cap Code

A leak at any part of the evap system including the gas cap can set a diagnostic trouble code.

Check engine light gas cap code.

Code p0457 indicates the pcm has detected an evap leak most likely caused by the gas cap. The check engine light should go off after you drive for several minutes if the light was caused by a loose gas cap. The gas cap is a part of the vehicle s evaporative emissions system and can cause problems with the system if it has an issue. Pay attention to the dashboard after the check engine light experience.

An illuminated check engine light is another symptom of a potential issue with the vehicle s gas cap. If you find that the light keeps coming on and goes off again once you tighten the gas cap then your gas cap is too loose. An illuminated check engine light. Code p0457 is typically caused by one of the following.

This warning light can indicate a wide range of problems some minor and others much more serious. Almost every car owner that has ever filled up a gas tank has encountered a check engine light that comes on when the gas cap has not been closed properly. I put together a video discussing a problem my neighbor had with nissan maxima four door sedan after they filled the fuel tank. The gas cap code is a common diagnostic trouble code that might turn your check engine light on.

Check engine light comes on. If your gas cap is not properly attached you may see a check engine light or a loose cap warning light on the dash. It s a common scenario i see all too often. That being said there can be several reasons behind check engine light due to the gas cap failure.

An improperly sealing fuel cap may cause an evap system leak which will set off. Common causes for p0457. You can either tighten the cap and wait for the system to reset itself when it determines the problem is fixed or you can use an obd ii code scanner to manually reset the system.